Dockerfile: remove duplicate package installations
Dockerfile: remove duplicate package installations

Removed installation of packages that are already installed by the
inherited image, crops/yocto:ubuntu-16.04-base.

Signed-off-by: Oleksandr Kravchuk <da66fcdb9815331ae441a2bc352cef73cf081e1e@pelagicore.com>

sashko/pelux-manifests,Pelagicore/pelux-manifests